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AWS E2209 vs. ACI-ASTM CF20 Steel

Both AWS E2209 and ACI-ASTM CF20 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E2209 and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
50
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 770
530

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.0
3.1
Embodied Energy, MJ/kg 55
44
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 35
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
19
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 4.3
4.3
Thermal Shock Resistance, points 20
11

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.2
Chromium (Cr), % 21.5 to 23.5
18 to 21
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 58.4 to 66.9
64.2 to 74
Manganese (Mn), % 0.5 to 2.0
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 8.5 to 10.5
8.0 to 11
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040